Abstract:

To explore a more environmental method for the hydrophobic finishing of wool/cashmere automotive decoration textiles, the fabrics were hydrophobically finished by radio frequency low-temperature plasma in combination with electrodtatic spraying.Thesurface morphology changes of original sample and the plasma-treated sample were characterized by scanning electron microscopy, as well as the ydrophobic sample finished by electrostatic spraying and the hydrophobic sample finished by plasma modification in combination with electrostatic spraying. The adhesive force, static contact angle and dynamic contact angle of above four samples were measured by a dynamic contact angle measurement instrument. The study revealed that the plasma treatment could etch the surface of the wool/cashmere sample, promoting the attachment and uniformity of hydrophobic agent; the plasma treatment cound improve the adhesive force to 98.39μN, decrease the static contact angle to 107.9° and increase the dynamic contact angle to 83.39°; and the hydrophobic sample finished by electrostatic spraying after plasma treatment possessed the lowest adhesive force and dynamic contsct angle than other samples, the air and moisture permeability of which wer slightly reduced by 2.9 mm/s and 384 g /(m2•d), respectively, indicating the feasibility of hydrophobic finishing using plasma modification on combination with electrostatic spraying. 

Key words: radio frequency plasma, electrostatic spraying, hydrophobic finishing, wool automotive decoration textile